InteliSys
NT
-AFR-Abstract, SW version 1.0, ©ComAp – December 2006 24
IS-NT-AFR-1.0-Abstract.pdf
Possible extension modules
Module
Binary inputs
Binary outputs
Analog inputs
Analog outputs
IGS-PTM 8 8 4 1
IS-BIN16/8 16 8 - -
IS-AIN8 - - 8 -
I-AOUT8 - - -
8
IGL-RA15 -
15
LED
- -
Hint:
More detail for extension modules configuration see in corresponding InteliSys, IGS-PTM or IGL –
RA15 user guide.
Binary inputs
Hint:
Following list contains inputs/outputs related to Air Fuel Ratio control only. For standard I/O list please
see standard InteliSys application manuals.
Previous GasSelection input – was replaced by Force setpoint function.
Misfiring
Misfiring binary input activates IS-NT-AFR engine misfiring protection. Misfiring is detected from
external misfiring unit. Protection is active only when gen-set power is above
Low MAP power.
When binary input is active:
- Immediately reduces required MAP value by setpoint
AFR control
:
MisfMAP reduct
- Starts engine unloading after
AFR control
:
MisfLdRed del
with rate
Sync/Load ctrl
:
Load ramp
to
value
Gener protect
:
Min Power PtM.
- Activates Engine Slow stop (Cool down) after
AFR control
:
Misfiring del
.
The engine shut down is activated when Misfiring unload protection is activated 5 times in one hour
(Alarm list and History record Sd Misfiring). The internal (modulo 5) counter is reset after one hour
without Misfiring activation or after engine Stop.
BI Misfiring
Engine
Genset load
GCB
opened
Slow stop
MisfLdRed del
Misfiring del
MAP reduction
Lo
ad
ra
m
p
Min Power PtM
DxLoad reduct
Input activates IS-AFR engine knocking protection. Knocking is detected from external unit. Protection
is active only when gen-set power is above
Low MAP power.
When is closed:
- Immediately starts engine unloading with rate
Sync/Load ctrl
:
Load ramp
to value
Gener protect
:
Min Power PtM.
- Activates Engine shut down after
AFR control
:
Knocking del
.
The engine shut down is activated when binary input DxLoad reduct is activated 5 times in one hour
(Alarm list and History record Sd Knocking). The internal (modulo 5) counter is reset after one hour
without Knocking activation or after engine Stop.
GasVTest OK
Binary input from Gas valve test unit that indicates OK result of Gas valve test.
